Family Urolophidae Gray 1851 (round ray)
Chondrichthyes - Myliobatiformes - Urolophidae
Parent taxon: Myliobatoidei according to R. van der Laan 2019
See also Cappetta 1987, Carnevale et al. 2014, Marramà et al. 2020, Nelson et al. 2016 and Tabuce et al. 2005
Sister taxa: Aetobatidae, Aturobatis, Dasyatidae, Gymnuridae, Hexatrygonidae, Mobulidae, Myliobatidae, Plesiobatidae, Potamotrygonidae, Rhinopteridae, Rhombodontidae, Urotrygonidae, Zanobatidae
Subtaxa: Urolophus Urolophus crassicaudatus
Ecology: nektobenthic carnivore
Distribution:
• Quaternary of United States (4: California collections)
• Pliocene of United States (1: California)
• Oligocene of Germany (1)
• Eocene of Italy (3), Morocco (1)
Total: 10 collections including 13 occurrences